diff -r 25e3bf6e193d -r ad3dee8b6d48 controls/PouInstanceVariablesPanel.py
--- a/controls/PouInstanceVariablesPanel.py	Mon Jan 16 12:15:20 2017 +0300
+++ b/controls/PouInstanceVariablesPanel.py	Mon Jan 16 12:22:58 2017 +0300
@@ -93,7 +93,7 @@
             images_bbx = self.GetItemRightImagesBBox(item)
             r_image_w, r_image_h = self._imageListRight.GetSize(rightimages[0])
             
-            dc.SetBrush(wx.WHITE_BRUSH)
+            dc.SetBrush(wx.TRANSPARENT_BRUSH)
             dc.SetPen(wx.TRANSPARENT_PEN)
             
             bg_width = (r_image_w + 4) * len(rightimages) + 4